کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1627486 1516454 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermoelectricity for crystallographic anisotropy controlled Bi–Te based alloys and p–n modules
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Thermoelectricity for crystallographic anisotropy controlled Bi–Te based alloys and p–n modules
چکیده انگلیسی

The p-type (Bi2Te3)0.2(Sb2Te3)0.8 and n-type (Bi2Se3)0.05(Bi2Te3)0.95 alloys were fabricated by the shear extrusion to enhance texture evolution. Transverse Direction (TD) inverse pole figure analysis via electron backscattered diffraction patterns (EBSP) showed that most of the crystallographic orientations of shear-extruded sample were well aligned in the range deviating from 60° to 90° from the c-axis. The electric resistivity of p-type controlled to be 1.008 × 10−5 Ω m, which is nearly equal to that of unidirectionally grown sample. The maximum figure of merit for p-type alloy was found to be z = 3.03 × 10−3 K−1 and for the n-type, z = 2.26 × 10−3 K−1. Thermoelectric p–n modules were prepared via the spark plasma sintering (SPS) solid bonding for evaluation on their thermoelectricity. The power generation characteristic of p–n modules was also evaluated for various temperature differences between cold and hot sources.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 419, Issues 1–2, 10 August 2006, Pages 306–311
نویسندگان
, , ,